The Characidae are distinguished from other fish by the presence of a small adipose fin between the dorsal and caudal fins.

Its second dorsal fin and anal fin are close to the same height.

Similarly, the dorsal fin (or the small fin on their back) also differs among the two.

They have a dorsal fin located in the back part of the body and an anal fin separated from the caudal fin by the caudal peduncle.

The male dorsal swimmer is more developed and sharp.

The Characidae are distinguished from other fish by the presence of a small adipose fin between the dorsal fin and caudal fin.

The dorsal fin is narrow, high and present a short base as well as the anal fin.

This large fish became the island of Tahiti whose dorsal fin would be represented by Mount ‘Orohena’ culminating at 2241m and Tahiti Iti the second dorsal fin.

The dorsal fin is uneven and in a quite retracted position.

The dorsal fin is uneven and in much back position.

Its dorsal fin is generally smaller and more triangular as well.

However, they differ from most of their relatives in having only a dorsal fin on their back; most other fishes of Ostariophysi have a small fleshy adipose fin behind the dorsal fin.

The bones that support the dorsal fin are called Pterygiophore.

They differ from most of their relatives in having only a dorsal fin on their back; most other fishes of Ostariophysi have a small fleshy adipose fin behind the dorsal fin.

They differ from most of their relatives in having only a dorsal fin on their backs; most other fishes of Ostariophysi have a small, fleshy adipose fin behind the dorsal fin.